OMI/Aura Ozone (O3) Profile 1-Orbit L2 Swath 13x48km V003 (OMO3PR) at GES DISC

The Aura Ozone Monitoring Instrument Level-2 Ozone Profile data product OMO3PR (Version 003) is now available from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) for the public access. OMI Level-2 ozone profile product, OMO3PR at the pixel resolution 13x 48 km (at nadir), is based on the optimal estimation algorithm (Rodgers, 2000) with climatological ozone profiles as a-priori information. The OMO3PR retrieval algorithm uses spectral radiance values from the UV1 channel (270 nm to 308.5 nm) and from the first part of the UV2 channel (311.5 nm to 33 0 nm). OMO3PR product provides ozone values (in Dobson unit) for 18 atmospheric layers. It also provides a-priori ozone profile values, error covariance matrix, averaging kernel and some ancillary information such as time, latitude, longitude, solar zenith and viewing zenith angles and quality flags. The short name for this Level-2 OMI ozone profile product is OMO3PR. The lead scientist for this product is Dr. Johan de Haan.

The OMO3PR product files are stored in the version 5 Hierarchical Data Format (HDF-EOS5). Each file contains data from the day lit portion of an orbit (approximately 53 minutes). There are approximately 14 orbits per day thus the total data volume is approximately 150 GB/day.